from datetime import datetime, timedelta

file_path = r'D:\workspace\python_all\zz_download_file\gnzj'
file_name_prex = datetime.now().date().strftime('%Y-%m-%d')+'_'

file_all_path = file_path + '\\' + file_name_prex
print(file_path)
print(file_all_path)

prev_trading_day = datetime.today().date()

print( (prev_trading_day + timedelta(days=1)))